Whatever the shape –
we can mould the tank

Choose the Rotational Moulding material for your application

Polyethylene, polypropylene and nylon are just some of the thermoplastics which can be used in Rotational Moulding. Various grades and specifications are available to match your performance and price requirements.

These materials offer a wide variety of performance characteristics, such as resistance to chemicals, UV stability, impact resistance, performance under load and colour availability and stability.

Amber Plastics engineers have a detailed knowledge of polymer physics. We will work with you to undertake a technical review of your Rotomoulded product specific requirements to ensure the correct material is selected.

Materials / Plastics for Rotational Moulding


Polyethylene (or polythene, as it is also known) is by far the material most used for Rotational Moulding. It has ease of processing, good low temperature impact strength and excellent chemical resistance. It falls into various categories.

L.D.P.E. {Low Density Polyethylene} – This is flexible and tough, easy to process and has low strength, excellent chemical resistance.

L.L.D.P.E. {Linear Low Density Polyethylene} – Better mechanical properties than L.D.P.E. Higher stiffness, excellent low temperature impact strength and environmental stress crack resistance.

H.D.P.E. {High Density Polyethylene} – Better stiffness than the lower densities, but more prone to warping during moulding and lower impact strength.

EBA Copolymer – Gives excellent low temperature flexibility. Has less strength than straight polyethylene.


AMBER is the leading processor of polypropylene in the UK. It gives excellent resistance to stress and high resistance to cracking (i.e. it has high tensile and compressive strength) and high operational temperatures, with a melting point of 120°C.
It is highly resistant to most alkalis and acids, organic solvents, degreasing agents and electrolytic attack.


Nylon 12 – Low moisture absorption and good chemical resistance, but mechanical properties and heat resistance lower than, for example, Nylon 6. Nylon 12 is more easily processed, but more expensive.
Nylon’s secondary finishing operations are more difficult than polyethylene’s.

Features and Benefits that can be Rotationaly Moulded in to your next Design

  • What Wall Thickness for rotational moulding ?
  • What Radius should comers be (internal and external) ?
  • Do I need a Taper or Draft Angle on a rotational moulding ?
  • What kind of Tolerance on rotational moulding ?
  • What Materials for rotational moulding ?

We welcome all serious enquiries and requests for more details. We look forward to helping you on your next project development.

Give us a Call on 01246 456525 or Email: tony.bunting@amberplastics.co.uk